Two (2) American Star 4130 Chromoly Super Heavy Duty ATV Ball Joints For Kawasaki Brute Force 750 Super strong Hardened 4130 Chromoly Steel Case and 4130 Chromoly Stud. Made for Racing and Heavy Duty Recreational Use. Replaces Weaker Stock OEM Ball Joints 90 Day Unconditional Warranty Replaces Kawasaki Part # 59266-0014